The present invention provides a polyhydric phenol compound represented by the formula (I): ##STR00001## wherein at least one selected from R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 is a group represented by the formula (II): ##STR00002## wherein X.sup.1, X.sup.2, X.sup.3 and X.sup.4 each independently represent a hydrogen atom or a C1-C4 alkyl group, n represents an integer of 0 to 3, Z.sup.1 represents a C1-C6 alkyl group or a C3-C12 cycloalkyl group, and ring Y represents an alicyclic hydrocarbon group, and the others are hydrogen atoms, and a chemically amplified resist composition containing the same.